Four men have been arrested and a secret drug lab shut down in the wake of a Montreal police narcotics investigation that saw six raids carried out late last week on an alleged large-scale trafficking ring with links to organized crime and criminal biker gangs.

The raid in Chertsey targeted a secret drug lab where police seized seven kilos of methamphetamine, 100,000 methamphetamine capsules, anabolic products as well as ingredients and equipment for large-scale drug production, including three capsule presses, each capable of producing more than 100,000 pills an hour.

Montreal police said the operation was carried out with the collaboration of the Sûreté du Québec and the RCMP and was made possible thanks to information gleaned during a year-long investigation in 2016 that targeted those involved in the production of synthetic drugs, particularly fentanyl.